I have an Electron with Pres Plus 1, AP4 (with ADFS 1.15 ROM), AQR, ABR, Akhter 40/80 track 5.25" drive.
I have recently started to write programs in assembler and am having difficulty obtaining detailed information regarding certain operating system addresses. In particular I want to obtain:-
A full list of all operating system RAM addresses (&0000 to &0E00) with their functions, especially all addresses for interception of BREAK (&287 etc);
A similar listing of ADFS RAM adresses (&0E00 to &1D00);
1770 DFS register addresses:
Drive control register;
Status/command register;
Track register;
Sector register;
Data register;
Any available technical data for the cassette port serial communication.
In addition to the usual User Guides, the books I have are:
If this was our dearly missed Electron User, the knowledgable editor would now be reeling off a helpful list of double-dutch which only you clever people can understand. This ain't, I'm not! Someone help please!!
4th November 1993